36 



Quite at the end of his work (p. 128) Heincke writes : — 

 " Hiemach bekunden die von Petersen gegen mich ins 

 Feld gefiihrten Messuugen von Herbst und Friihjahrs- 

 herigen aus den danischen Gewassern, die ich in den 

 Tab. LXXXI. bis LXXXIX. s. 105 bis 108 wiedergegeben 

 habe, einen unzweifelhaft sicheren Untersehiecl zwischen den 

 beiden Saisonrassen, indem bei den Friihjahrsheriugen 

 die Mittelformen 2bII., bei den Herbstheringen 2aII. und 

 2al. vorkommen." 



When these Tables are examined it is seen that Heincke 

 is incorrect ; Table 82 gives for 15 autumn herring from 

 Yarberg in the Kattegat the average formula 2bII., that 

 is to say the average formiila of spring herring. Fui-ther, 

 in the examples cited above it is seen that the formulge of 

 Heincke do not hold good for the herring of the Danish 

 waters, for example, in the case of Liimf jord (two groups) 

 and Yarberg. 



To return to Heincke's summaiy (Table 193) : — 



Spring Herring. 



Tables with correct average formula 2bII. 15 i.e. 65%. 

 „ other „ ,, 8 i.e. 35 %. 



Autumn Herring. 



Tables with correct average formula 2al. or 2aII. 



17 i.e. 60-7 % 

 other „ „ 11 t.^'. 39-3% 



Again, we have 30 body measurements of full herring 

 from the Greifswalder Bodden given in Table 138 (p. 151), 

 which herring were captured in November, 1891. 



In Table 139 (p. 152) we have the skull measurements 

 of 20 of these herring given. 



In the summary of body measurements (pp. 196-199), 

 the 30 Grreifswalder herring are not given, but in the 



